Start with soaking your oats in the water for 20-25 minutes.
During this time, start mixing butter and sugar in the beater. Gradually add eggs and let them mix to get a nice and light texture. Finally, add the vanilla and mix it well.
Put the flour, baking soda, and spices. Add the soaked oats now and fold this creamy mixture.
Add the prepared pan mixture to a baking pan and bake it for 40-50 minutes at 350 degrees F.
Mix all the topping ingredients during the baking and add the topping as soon as the cake is made. Let it heat under the broiler to get a gold color on the top.
Make sure to watch the process while the topping is getting done. You do not want to overdo it.
Serve it hot and fresh from the oven.